Knife



(L A. IA/EISHAUPT.

KNIFE.

APPLICATION FILED AUG. I4, i910.

.IIAIIIJAMIIAA IIIIaIIz 53% .IIAIRIIII I www II m' www .IIII.. TIILIIIIIIIIIIIIIIIAIII III IIPWIIIBWI II/ y o IIIIIII lll) PATENT OFFICE;

GUSTAV A. WEISHAUPT, 0F WILLIAMSPORT, PENNSYLVANIA.

KNIFE.

Specification of Letters Patent.

Patented Mal. 22, 1921.

Application filed August 14, 1918. Serial No. 249,858.

To all whom it may concern.'

Be it known that I, GUs'rAv A. WinsriaUrT, a citizen of theUnited-States, residing at 1Williamsport, in the county of Lycoming andState of Pennsylvania, have in'- vented new and useful Improvements 1nKnives, of which the following is a specification.

rThis invention relates to improvements in the construction of penknives.

lfn the ordinary construction of pen knives the ends of the handleproject beyond the ends of the blades, when the latter are in theirclosed position, and the partition between the blades is of a. lengthcorrespond- -ing to the length of the handle. The partition, and as amatter of fact the ends of the handle, by frictional contact therewithbind the blades in the opening and shutting thereof and under otherconditions, wear so that the same becoines sharpened and soon cut theirway through the users pocket, as well as odering other objectionablefeatures.

Also in the ordinary construction of pen knives the contact engagementbetween the blades and the springs is such that the blade closed quicklyis liable to infiict injury to the user of the knife.

' It is the object of the present inventio-n to overcome the abovementioned objections and to produce a pen knife wherein the bladecooperates with the spring in another' manner so as to leave no gaps orspace between the ends of the handle and the blade of the knife, whenthe blades are in their closed position, and wherein the said springsand blades further coact to permit of the blade being closed in perfectsafety.

Other objects and advantages will appear as the nature of the inventionis better understood reference being had to the accompanying drawings inwhich there is illustrated a simple and satisfactory embodiment of theimprovement and in which Figuie 1 is a perspective view of a pen knifeconstructed in accordance with this invention;

Fig. 2 is a lon 'tudinal sectional view taken in a line wit the side ofone of the springs and showing the blade in its open position;

Fig. 3 is a similar sectional view showing the blade partly closed;

Fig. 4 is asimilar view showing the blade entirely closed.

While it is to be understood that a pen knife constructed in accordancewith my invention may be provided with any desired number of blades, Ihave deemed it necessary, for the purpose of illustration, to only show,in the accompanying drawings, a knife provided with a single blade and asingle spring which coperates with the blade.

The knife is broadly indicated by the numeral 10 and comprises a handlemade up of similarly shaped strips of any suitable material divided fromeach other, at what may be termed the inner edges thereof by a springGconstructed in accordance with this invention. The spring 6 at the outerend of the knife is rounded upon itself, or otherwise hook shaped, asindicated by the numeral 7 one of the ends of the handle may be securedto this rounded portion if desired. In any event the rounded portion isdesigned to fill the gap between the plates comprising the handle of theknife at the outer end of the knife, i

T he spring 6, adjacent what I will term the inner end of the knife ispreferably concaved` as at 8 and is provided with an outstanding lug 9.This lug provides a stop for the manner of shutting the inner end of thej blade 10. The spring 6, upon its inner face, outward of the stop 9 isfurther concaved as at 1l and'lQ, a substantially V-shaped catch lug 13being provided between the walls 11 and 12, and a second catch lug 14being rovided at the outer end of the wall 11. he outer edge of this lugis formed by rounding what I will refer to as the inner end of thespring 6 the said rounded portion being indicated by the numeral 15 andforming the rounded ends of the blades comprising the side of the knife.

The blade 10 is pivotally secured as at 16 between the handle plates andas its peripheral edge at its said pivot is round it is received in theconcaved portion 1l of the spring 6 when in either its open or closedposition. The rounded end 17 of the blade terminates, upon the outeredge of the blade in a depression providing a straight shoulder 18, andthis shoulder is designed to beengaged by .the catch lug 1li when theblade `is open. The round portion 17, at the sharpened edge of the bladeis provided with two `spaced depressions 19 and 2U respectively,

the depression E20l being designed to receive a stop lug 13 when the'blade is partly closed and to receive the stop lug 15 if the blade is jWholly closed. In this last mentioned position the depression 19receives the lug 13. The blade 10 at the cutting edge thereof, inward ofthe depression or notch 19 is formed With a straight portion 21 which isadapted 'to engage with the stop lug 9 of the spring when the blade isWholly closed.

It is believed from the foregoing description, when taken in vconnectionwith the drawings that the construction and advantages ofthe inventionWill be apparent without further detail and description.

Having described the invention, what is claimed is A knife including ahandle comprising side plates, a spring therebetween in alinement withone of the edges of the plates spacing said plates, said spring havingthe rounded end which is connected to the plates and which also has itsbody portion approximately vat its center secured to said plates, saidspring having a widened portion at the free end thereof provided with aplurality of spaced round concavities which enter from the inner edgethereof and which have straight portions therebetween providing stops, aknife blade pivoted between the handle plates near the free end of thespring and having its outer surface at the pivoted end thereof formedwith rounded projections and rounded concavities between the projectionsand inclined shoulders communicating with the outer depressions, saidrounded extensions designed to be received successively in the upperconcave portion of the spring when the knife blade is swung to eitheropen or closed position, and when 1n opened position, the free end ofthe spring designed to contact one of the inclined surfaces of the knifeblade, and when in closed position the inner edge of the knife bladeadjacent to the second inclined shoulder designed to rest on the innerstraight portion at the widened end of the spring for holding thecutting edge of the knife blade out of contact with the body of thespring.

In testimony whereof I affix my signature.

GUSTAV A. WEISHAUPT.

